Following a complete upgrading and renovation in 2005, the original Granary contains four floors. On the top floor a light and airy gallery and studio space is equipped for art classes and exhibitions. Other floors are equipped for fabric classes, stained glass design and woodworking, with the Haddington Camera Club occupying a studio on the first floor.

A modern building was created using the original garden wall, and now houses a large soundproofed multipurpose hall, with recording facilities and performance space. A wide range of activities take place here under the auspices of the Haddington Bridge Centre.

Owned by the Lamp, Haddington House is leased to a local business. The stunning gardens are largely owned by Haddington Garden Trust, a local organisation with strong historic links to the Lamp of Lothian Trust.